I am using the middle size starting with CO 85. Now here is my problem. I made both pieces according to the pattern, one edge with the k2. K2tog. and the other edge with the Sl1. K1. psso. K2. patten. Now I assumed that when sewing the seams I would sew the identical edges together. in other words Sl1. K1. psso. K2. edges together and K2. K2tog edges together BUT they don't fit.

Should I have reversed the pattern for it to work? Did I assume wrong? What do I do? Can some one help me please?